President Obama walks back to the Oval Office with Vice President Joe Biden after delivering a statement cheering the 7 million people who signed up for coverage under the Affordable Care Act.

President Obama walks back to the Oval Office with Vice President Joe Biden after delivering a statement cheering the 7 million people who signed up for coverage under the Affordable Care Act. (Jewel Samad / AFP/Getty Images)

The glitch-filled launch of Obamacare's health insurance exchanges gave new life to Republican criticisms of the law, with even Democrats expressing dismay over healthcare.gov's rough debut. Read more: Obama: 'This thing is working'